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Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

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Multipath IO

MPIO allows a server to use multiple paths for IO if they are available.

MPIO software offers redundancy at the path level. MPIO typically operates in a round-robin manner by sending packets first down one path and then the other. If a path becomes unavailable, MPIO software continues to send packets down the functioning path. MPIO is required to enable redundancy for servers connected to a Storage Center with SAS front-end connectivity.

  • NOTE: MPIO is operating-system specific, and it loads as a driver on the server or it is part of the server operating system.

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